"Well, well!" fluttered the professor. "You can explain that later on. Let's get away from here."

"Look!"

Frank held up his hands, and, for the first time, his friends saw the irons on his wrists. They cried out in amazement.

"Pwhat th' ould b'y is th' m'anin' av thot?" demanded Barney Mulloy, in the most profound astonishment.

"It means that I have been arrested; that's all."

"Pwhat fer?"

"Robbing, shooting, murdering."

"G'wan wid yez!"

"This is no time to joke, Frank," said Professor Scotch, reprovingly. "Are you never able to restrain your propensity for making sport?"

"This is a sorry joke, professor. I am giving you the straight truth."